oppose

Synonyms: argue assail assault attack bar battle bombard call in question check combat confront contradict controvert counter counterattack cross debate defy deny disagree disapprove dispute encounter exposé face face down fight fly in the face of frown at gainsay hinder neutralize not countenance prevent protest resist reverse run counter to search out speak against stand up to take a stand take issue take on taunt thwart turn the tables withstand

Antonyms: aid assist favor help support

Synonyms: array confront contrast counter counterbalance face match pit set against vie

Antonyms: join participate